ST’s antenna tuners and tunable capacitors offer high quality and high reliability based on a ferroelectric material composed of baryum strontium and titanate (BST). The adoption of this new tunable material is a breakthrough that enables RF tunable technology to serve the mobile wireless market.
ST markets three product series, derived from its tunable technology:
- Discrete tunable capacitors : the STPTIC devices.
Complete antenna tuner modules : the STRAFT devices.
These are made of tunable capacitors, combined with high-Q inductor and assembled into LGA modules.
Tuning ciruits: the STHVDAC devices, capable of driving both STPTIC and STRAFT devices.
These antenna tuning circuits can be controlled via SPI or the new radio-frequency front-end (RFFE) interface developed by the MIPI Alliance.